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| Number | Title | Issue Date |
| 4686529 | Remote-control lock system A remote-control lock system has a transmitter that can emit any of a set formed of a multiplicity of differently coded signals, a receiver that can be set to respond to any of the signals, and a lock operable by the receiver when it receives a signal it ... | 08/11/1987 |
| 4672375 | Keyless entry system for automotive devices with compact, portable wireless code transmitter, and feature for preventing users from locking transmitter in vehicle A keyless entry system allows operation of various vehicle devices including a door lock without using a mechanical key, such as an ignition key. The system comprises a wireless, portable transmitter adapted to produce a radio signal indicative of a uniqu... | 06/09/1987 |
| 4670746 | Keyless entry system for automotive devices with feature for giving caution for locking wireless code transmitter in vehicle A keyless entry system can lock and unlock an automotive vehicle door, a trunk lid, a glove box and/or a steering column without an ignition key. The system comprises a transmitter producing a radio signal indicative of a preset unique code, and a control... | 06/02/1987 |
| 4658371 | Fuel dispensing and vehicle maintenance system with on-board computer A method for dispensing fuel has features to prevent theft of fuel and also control maintenance of authorized vehicles. The system includes a portable memory unit which remains with each vehicle. The portable memory unit is removably connected to an on-bo... | 04/14/1987 |
| 4652860 | Security installation A security installation with a portable transmitter and a receiver arranged at the object to be protected for an IR, respectively, UHF code signal which is changeable at least in part; alone the code signal of the transmitter can be changed upon random co... | 03/24/1987 |
| 4638292 | Theft prevention system in an automotive keyless entry system with automatic door locking A theft preventive system, in an automotive keyless entry system with automatic door locking, is adapted to produce an alarm signal in response to door opening when the theft preventive system is in a door-locked position, and which is cooperative with a ... | 01/20/1987 |
| 4595902 | Anti-theft apparatus for vehicles In an anti-theft apparatus for vehicles with wireless transmission of the code signal, the latter is suitably overlapped outside of the vehicle by a secondary signal which is not to be received in or on the vehicle. This results in an effective protection... | 06/17/1986 |
| 4580136 | Luggage door unlocking device A luggage door unlocking device for a vehicle by which a luggage door of vehicle can be unlocked without using an unlocking key is disclosed. The device includes a portable transmitter for generating an unlocking signal, a receiver which is mounted on a v... | 04/01/1986 |
| 4568998 | Electronic code controlled deadbolt An electronic lock system for power positioning of a deadbolt, responsive to passive code combinations of tone frequencies imposed upon a radio frequency carrier wave, the code combinations being encoded and decoded with direct activation of switching to ... | 02/04/1986 |
| 4488056 | Electronic door locking system for an automotive vehicle An electronic door locking system for an automotive vehicle which locks the vehicle doors when the driver depresses push-button type switches installed at an appropriate position on the outside of an automotive vehicle in accordance with a predetermined c... | 12/11/1984 |
| 4477874 | Card-operated control system for vehicle components A card-operated system for controlling vehicle components is responsive to a magnetic card exclusively used by a particular user to control actuators associated with the vehicle components such as driver's seat position and the like. In the card is magnet... | 10/16/1984 |
| 4463340 | Anti-theft control system The anti-theft control system includes a sending module (A) for sending encoded signals on a power line (12) of a vehicle power supply (B). The sending module (A) includes a keyboard (52) on which an authorized user enters his code. If the proper code is ... | 07/31/1984 |
| 4455588 | Electronical unlocking method and system An electronical locking/unlocking system by which a door can be unlocked when a single switch is depressed repeatedly by an operator in time with a musical rhythm which he knows or in accordance with a Morse-type code. The electronical locking/unlocking s... | 06/19/1984 |
| 4450545 | Voice responsive door lock system for a motor vehicle A voice responsive door lock system is provided wherein the operation of the door lock device is vocally controlled by the driver via a voice recognition unit. The voice responsive door lock system for a motor vehicle comprises a door position detection m... | 05/22/1984 |
| 4437153 | Apparatus control system In the present invention, the control system comprises a number presetter in the form of a switch board including a certain number of, say five, pushbutton switches. By depressing them sequentially and selectively in a desired order, an arbitrarily select... | 03/13/1984 |
| 4428024 | Electronic door locking system for an automotive vehicle An electronic door locking system for an automotive vehicle with which vehicle doors can be locked, by depressing a proper push-button type switch representative of a predetermined door-locking octal digit, only when an ignition key is not left in the ign... | 01/24/1984 |
| 4366466 | Apparatus for preventing unauthorized starting of a motor vehicle An arrangement for preventing an unauthorized starting of vehicles which includes a data carrier preferably connected to a key provided for mechanical locks of the motor vehicle and with an evaluating circuit triggering a signal if the correct information... | 12/28/1982 |
| 4258352 | Control device for vehicle locks A device is provided for controlling the electro-mechanical locking and unlocking member of a vehicle door lock and comprises a transmitter independent of the said vehicle and a receiver mounted inside the vehicle. The transmitter comprises a direct curre... | 03/24/1981 |
| 4176250 | Time division multiplexing system for an automobile A time division multiplex system includes pulse width modulation to provide an automobile interrogate and control system whereby either the driver or front seat passenger can manually-operate switches mounted on doors to control door locks, windows and se... | 11/27/1979 |
